plan9fox/rc/bin/inst/bootplan9

#!/bin/rc

# look for plan9 partition in the DOS partition table (if any)
p9part=`{disk/fdisk /dev/$disk/data >[2]/dev/null </dev/null | grep PLAN9 | sed 1q | sed 's/ *(p.) .*/\1/'}
if(~ $#p9part 0){
	# nothing can be done
	exit ''
}

echo
echo 'If you use the Windows NT/2000/XP master boot record'
echo 'or a master boot record from a Unix clone (e.g., LILO or'
echo 'FreeBSD bootmgr), it is probably safe to continue using'
echo 'that boot record rather than install the Plan 9 boot record.'
echo
prompt 'Install the Plan 9 master boot record' y n 
switch($rd) {
case n
	;
case y
	disk/mbr -m /386/mbr /dev/$disk/data
}

prompt 'Mark the Plan 9 partition active' y n
switch($rd) {
case n
	;
case y
	{ echo 'A '^$p9part; echo w } | disk/fdisk /dev/$disk/data >[2]/dev/null >/dev/null
	x=$status
	if(~ $x '' '|'){
		echo
		echo 'The Plan 9 partition is now marked as active.'
		exit ''
	}
	exit $x
}
exit ''